build(deps): bump vim/bundle/vimwiki from 705ad1e to 7279261

Bumps [vim/bundle/vimwiki](https://github.com/vimwiki/vimwiki) from `705ad1e` to `7279261`.
- [Release notes](https://github.com/vimwiki/vimwiki/releases)
- [Commits](vimwiki/vimwiki@705ad1e...7279261)

---
updated-dependencies:
- dependency-name: vim/bundle/vimwiki
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>